Part of the $10,000 grant we got from the Institute of Electrical and Electronics Engineers was to go towards “several tabletop displays.” The first of these has recently made its debut.
This first display is simply a microphone connected to an oscilloscope (see below). Talk into the horn, and the oscilloscope displays the waveform of your voice. It’s simple, but effective. Kids and adults were sitting down to see their voice all day today.
The scope itself is rather remarkable. It’s one of the new scopes that use an LCD display rather than a CRT. That means it’s less than a foot deep, which is a lot smaller than the CRT-based scopes that most hams have in their shacks (if they have a scope, anyway).
The “see your voice on the oscilloscope” is the first of three displays that will go on this table. As you can see in the photo at right, there are spaces for two more displays. One of them will be a Morse Code display; the second will be a crystal radio set display.
The display sits just outside the station, and the colors match those of the station. Come on down and see it sometime.